Optical illusions come in various forms, each challenging the brain in unique ways. The three main types are literal, ...

As of 2019, nearly one in two Americans over age 55 are at risk of dementia, according to the Census Bureau’s report.

Today’s optical illusion challenges viewers to spot the lone "987" hidden among a sea of "786s" within 5 seconds. This brain teaser tests your observation skills and cognitive sharpness. Optical ...